Also, if you do use Mutability Detector, and your source is accessible, please get in touch. When releasing new versions I want to have as little inconvenience for users as possible, and currently I only judge this using a pretend client codebase. Potentially I could add your project to my continuous integration setup, and test my trunk code against yours to give more realistic feedback.

There's already a couple of issues I want to include in the next release (issues 17, 18, 19 at least) and of course, there's always "The String Problem", but if there's anything that's affecting you, please do get in touch.